[U-Boot-Users] MTD update?

[William Juul]

On two custom designs (ARM and PPC based) we are running YAFFS on NAND
devices in U-boot and Linux.

We had problems configuring YAFFS/MTD in such a way that we could use
the same partition in both U-boot and Linux. Additionaly we could not
find support for 4KB pages in the current MTD implementation in
U-boot. We also ran into (easily fixable) problems since nand_ids.c
contained two entries with the same ID.

Thus, we upgraded the MTD files in U-boot by using the corresponding
files in Linux 2.6.22.1, which we used at the time). This was a rather
large change of u-boot source, but it solved all problems we had with
NAND. The patch touched several files in drivers/nand, include,
include/linux, include/linux/mtd and common. The patch has a total
size of >300KB.

Currently this patch is based on 1.2.0 and it will require some work
before we submit a patch:
 - base the patch on 1.3.0
  - MAKEALL ppc/arm is currently breaking for some configurations
 - some code clean-up

We do not have the resources (time/HW) to test this patch on anything
else than our two custom boards. Thus we will have to rely on help
from the community after submitting the patch..

Comments?

Best regards
William

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William Juul, Senior Development Engineer
Data Respons Norge AS
Sandviksveien 26
P.O. Box 489
NO-1323 Høvik, Norway

Tel: +47 67 11 20 00    Fax: +47 67 11 20 50
Dir: +47 67 11 20 26    Mob: +47 95 79 32 53

www.datarespons.no
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